package cn.rui.controller;

import cn.rui.constant.MessageConstant;
import cn.rui.entity.Result;
import cn.rui.service.ReportService;
import cn.rui.service.SetmealService;
import com.alibaba.dubbo.config.annotation.Reference;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * 统计会员数量
 *
 * @author 徽州大都督
 * @date 2020/8/30
 */
@RestController
@RequestMapping("report")
public class ReportController {

    @Reference
    private ReportService reportService;

    @Reference
    private SetmealService setmealService;

    /**
     * 会员数量折线图数据
     *
     * @return
     */
    @GetMapping("getMemberReport")
    @PreAuthorize("hasAnyAuthority('REPORT_VIEW')")
    public Result getMemberReport() {

        Map<String, Object> map = new HashMap<> ();

        List<String> months = new ArrayList<> ();
        //处理时间,往前推12个月
        Calendar calendar = Calendar.getInstance ();
        calendar.add (Calendar.MONTH, -12);
        for (int i = 0; i < 12; i++) {
            calendar.add (Calendar.MONTH, 1);
            Date date = calendar.getTime ();
            months.add (new SimpleDateFormat ("yyyy.MM").format (date));
        }

        //根据月份查询数据库中对应的会员数量
        List<Integer> memberCount = reportService.findByMonths (months);

        map.put ("months", months);
        map.put ("memberCount", memberCount);

        return new Result (true, MessageConstant.GET_MEMBER_NUMBER_REPORT_SUCCESS, map);
    }


    /**
     * 套餐预约占比饼形图
     */
    @GetMapping("getSetmealReport")
    @PreAuthorize("hasAnyAuthority('REPORT_VIEW')")
    public Result getSetmealReport() {

        Map<String, Object> data = new HashMap<> ();

        try {
            List<Map<String, Object>> setmealCount = setmealService.findSetmealCount ();
            data.put ("setmealCount", setmealCount);

            List<String> setmealNames = new ArrayList<> ();
            for (Map<String, Object> map : setmealCount) {
                setmealNames.add ((String) map.get ("name"));
            }
            data.put ("setmealNames", setmealNames);

            return new Result (true, MessageConstant.GET_SETMEAL_COUNT_REPORT_SUCCESS, data);
        } catch (Exception e) {
            e.printStackTrace ();
            return new Result (false, MessageConstant.GET_SETMEAL_COUNT_REPORT_FAIL);
        }

    }

    /**
     * 运营数据统计
     */
    @GetMapping("getBusinessReportData")
    @PreAuthorize("hasAnyAuthority('REPORT_VIEW')")
    public Result getBusinessReportData() {

        try {
            Map<String, Object> data = reportService.getBusinessReportData ();
            return new Result (false, MessageConstant.GET_BUSINESS_REPORT_SUCCESS, data);
        } catch (Exception e) {
            e.printStackTrace ();
            return new Result (false, MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }


    }

    /**
     * 导出运营数据
     * @return
     */
    @RequestMapping("exportBusinessReport")
    @PreAuthorize("hasAnyAuthority('REPORT_VIEW')")
    public Result exportBusinessReport(HttpServletRequest request, HttpServletResponse response){
        try {
            Map<String, Object> result = reportService.getBusinessReportData ();

            //取出返回结果数据，准备将报表数据写入到Excel文件中
            String reportDate = (String) result.get("reportDate");
            Integer todayNewMember = (Integer) result.get("todayNewMember");
            Integer totalMember = (Integer) result.get("totalMember");
            Integer thisWeekNewMember = (Integer) result.get("thisWeekNewMember");
            Integer thisMonthNewMember = (Integer) result.get("thisMonthNewMember");
            Integer todayOrderNumber = (Integer) result.get("todayOrderNumber");
            Integer thisWeekOrderNumber = (Integer) result.get("thisWeekOrderNumber");
            Integer thisMonthOrderNumber = (Integer) result.get("thisMonthOrderNumber");
            Integer todayVisitsNumber = (Integer) result.get("todayVisitsNumber");
            Integer thisWeekVisitsNumber = (Integer) result.get("thisWeekVisitsNumber");
            Integer thisMonthVisitsNumber = (Integer) result.get("thisMonthVisitsNumber");
            List<Map> hotSetmeal = (List<Map>) result.get("hotSetmeal");

            //获取模板的绝对路径
            String realPath = request.getSession ().getServletContext ().getRealPath ("template")+ File.separator+"report_template.xlsx";

            //基于提供的Excel模板文件在内存中创建一个Excel表格对象
            XSSFWorkbook excel = new XSSFWorkbook(new FileInputStream (new File(realPath)));
            //读取第一个工作表
            XSSFSheet sheet = excel.getSheetAt(0);

            XSSFRow row = sheet.getRow(2);
            row.getCell(5).setCellValue(reportDate);//日期

            row = sheet.getRow(4);
            row.getCell(5).setCellValue(todayNewMember);//新增会员数（本日）
            row.getCell(7).setCellValue(totalMember);//总会员数

            row = sheet.getRow(5);
            row.getCell(5).setCellValue(thisWeekNewMember);//本周新增会员数
            row.getCell(7).setCellValue(thisMonthNewMember);//本月新增会员数

            row = sheet.getRow(7);
            row.getCell(5).setCellValue(todayOrderNumber);//今日预约数
            row.getCell(7).setCellValue(todayVisitsNumber);//今日到诊数

            row = sheet.getRow(8);
            row.getCell(5).setCellValue(thisWeekOrderNumber);//本周预约数
            row.getCell(7).setCellValue(thisWeekVisitsNumber);//本周到诊数

            row = sheet.getRow(9);
            row.getCell(5).setCellValue(thisMonthOrderNumber);//本月预约数
            row.getCell(7).setCellValue(thisMonthVisitsNumber);//本月到诊数

            int rowNum = 12;
            for(Map map : hotSetmeal){//热门套餐
                String name = (String) map.get("name");
                Long setmeal_count = (Long) map.get("setmeal_count");
                BigDecimal proportion = (BigDecimal) map.get("proportion");
                row = sheet.getRow(rowNum ++);
                row.getCell(4).setCellValue(name);//套餐名称
                row.getCell(5).setCellValue(setmeal_count);//预约数量
                row.getCell(6).setCellValue(proportion.doubleValue());//占比
            }

            //使用输出流进行表格下载,基于浏览器作为客户端下载
            OutputStream out = response.getOutputStream();
            response.setContentType("application/vnd.ms-excel");//代表的是Excel文件类型
            response.setHeader("content-Disposition", "attachment;filename=report.xlsx");//指定以附件形式进行下载
            excel.write(out);

            out.flush();
            out.close();
            excel.close();

            return null;
        } catch (Exception e) {
            e.printStackTrace ();
            return new Result(false,MessageConstant.GET_BUSINESS_REPORT_FAIL);
        }

    }

}
